ECE 4991 Final Exam
Study Guide
The Final Exam will be on Thursday Dec 13, 2012 from x-x pm. The exam will be held
in the Olin Engineering Auditorium. You can use three sheets of equations, the Y-Y
sheet, the Ch. 11 Terminology sheet, and a calculator.
~ 20% of the material will be from Exam 1…see study guide.
~40% of the material will be from Exam 2….see study guide
~40% of the material will be from: HW 8,9, and 10 and; sections 7.1-7.2, 8.1-8.2, 9.109.11, all Chapter 10, and 11.1-11.5.
The format of the exam will be similar to that of Exam 1 and 2. There will be 4 or 5
problems.
Specific topics to Study:
Chapter 7&8: RC and RL Transient Response, RLC Transient Response, make sure
you have equations for all three cases of RLC response and you know
what to do with initial conditions.
Chapter 9.10-9.11: Linear Transformer in the frequency domain. Reflecting the load
impedance to the primary coil. Know how to use the dot convention. The
Ideal Transformer, reflecting the load to the primary and be sure to have
the four dot convention drawings (and equations) on your equation sheet.
Chapter 10: P,Q,S, theta, pf leading or lagging, power triangle, rms values. Complex
power S=VxI* and units: W, VA, VAR. How to calculate complex power
for source, line, and load. Conditions for Maximum Power transfer.
*Power factor correction.
Chapter 11.1-11.5: Be able to work with Y-Source and both Y and Delta Load. Draw
the a-phase equivalent circuit. Positive Phase Sequence only. Find IaA,
IAB, Van, Va’n, VAN, VAB, Vab, … and for b and c phase. Find the
complex power for source, line, and load. Find the total 3-phase powers
St, Pt, and Qt. Be able to handle parallel loads as in Ch. 10, Become
familiar with the Y-Y sheet and the Ch. 11 Terminology sheet.
From Earlier Exams: Complex number math, Node Voltage Analysis (ne, #eqn, special
cases, constraint equation, time and frequency domain), Mesh Current Analysis (be…),
Norton Equivalent Circuit, Thevenin Equivalent Circuit, Ohm’s Law, KVL, KCL,
Passive sign convention, Power conservation, voltage divider, current divider, Time
Domain <> Frequency Domain. Resistor, Cap, and Inductor combinations. Linear
Transformer and the dot convention in the time domain. Inductor (v,i ELI, p,w) and Cap
(v,i,ICE,p,w). Complex Impedance Z=R+jX. Mesh Current Analysis of the linear
transformer in the time domain and frequency domain. Wheatstone Bridge, Volt Meter,
and Ammeter.